so explain to me again why I have to change my entire toolchain for simply consuming a library? What if I consume a wasm library written in Rust, suddenly I have to add rust into my build script? What is the point of bytecode if people are going to repeat the same build over and over again anyway?

it's unfortunate that javascript (and typescript) is not bytecode.

It's the same in that js is the standard runtime, and typescript is something that compiles to it, that's NOT used in all codebases